gistfile1.txt

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

int main() {
  
  char** s = NULL;
  char delim[] = " ";
  char* tok = NULL;
  
  s[0] = "this is a string";
  
  tok = strtok(s[0], delim);
  
  while(tok != NULL) {
    printf("%s\n", tok);
    tok = strtok(NULL, delim);
  }
}